Re: [GIT pull] scheduler updates for 5.1

From: Ingo Molnar
Date: Mon Mar 11 2019 - 05:09:08 EST



* Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> On Sun, Mar 10, 2019 at 4:33 AM Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
> >
> > A small set of fixes for the scheduler:
>
> What? No.
>
> This is completely broken, and even warns loudly about it.
>
> kernel/sched/cpufreq_schedutil.c: In function âsugov_iowait_boostâ:
> ./include/linux/kernel.h:827:29: warning: comparison of distinct
> pointer types lacks a cast
> kernel/sched/cpufreq_schedutil.c:346:26: note: in expansion of macro âminâ
> sg_cpu->iowait_boost = min(sg_cpu->iowait_boost << 1,
> SCHED_CAPACITY_SCALE);
> ^~~
>
> because 'SCHED_CAPACITY_SCALE' is of type 'long' and 'iowait_boost' is
> 'unsigned int'.
>
> Why are you sending me code that hasn't even been compiled, and call it a "fix"?

Sorry about that - we'll sort this out!

Thanks,

Ingo